HAWK21M From India, joined Jan 2001, 31851 posts, RR: 54 Posted (10 years 8 months 2 days 15 hours ago) and read 7653 times:
I've noticed some Aircraft have Rounded tipped red squares painted around RVSM related Areas needeed to be aerodynamically clean & undamaged for RVSM Ops.
Where as some Aircraft don't.
Is the marking Mandatory.
Air2gxs From , joined Dec 1969, posts, RR:
Reply 1, posted (10 years 8 months 2 days 6 hours ago) and read 7608 times:
Our aircraft don't have a red bordered area around the static ports and we are RVSM. The area around the ports remains unpainted, but the size of the unpainted area has not increased. There are numerous restriction on repairs in our SRM, but no border.
I did a quick search of the FARs and couldn't really find anything, but didn't spend much time.
UAL Bagsmasher From United States of America, joined Sep 1999, 2153 posts, RR: 9
Reply 2, posted (10 years 8 months 2 days 4 hours ago) and read 7595 times:
Our aircraft (CRJ-200) are required to have a bordered area placarded around the RVSM critical area. Our squares are black in color. Any fuselage within that placarded area has to be perfectly smooth. Even chipped paint over rivet heads has to be sanded down. Any access dooors in that area must close perfectly flush. If you look closely at one of our planes, you'll notice quite a few sanded/primed areas within the RVSM area. The biggest PITA concerning RVSM is keeping those little squares applied. We tried decals, but they tore off quickly. Now we are using a paint pen, which isn't much better. Every 2 or 3 days they need to be re-applied.
Jeb94 From United States of America, joined Oct 2004, 654 posts, RR: 4
Reply 6, posted (10 years 8 months 11 hours ago) and read 7486 times:
What sort of paint are you using and are you giving it time to set up correctly? I don't know how the aerodynamics work on your planes but the MD80 hasn't been much of a problem and we have these big circles with a wedge in front of the primary ports. These markings also have something to do with the enhanced GPWS system I think as my previous employer doesn't use similar markings, at least not ones so easily seen.
Yikes! From Canada, joined Oct 2001, 284 posts, RR: 1
Reply 10, posted (10 years 7 months 2 weeks 5 days 3 hours ago) and read 7309 times:
Sorry, can't elaborate more. That was what I was told when I did my ETOPS pilot training back in '97 in Canada. Granted, RVSM started on the NAT's in early 1997 and maybe I was told the wrong information.
As far as RVSM goes, I was told that it was only the immediate area around the static ports that mattered. But perhaps since surface damage can also affect pitot tube airflow, most likely you're right. Especially if you're in the maintenance side. Unfortunately, the flow of info between our groups isn't as good as it could be!
AvionicMech From United Kingdom, joined Jan 2005, 315 posts, RR: 3
Reply 11, posted (10 years 7 months 2 weeks 4 days 22 hours ago) and read 7304 times:
It is only the area around the static ports that matters for RVSM as on aircraft such as the 757 and 737NG, but on aircraft like the 767 and 737 Classic which have a combined Pitot-Static head the RVSM area is around the heads rather than a separate static port as they don't have them.
If you look at the picture of the 757 below you can see where we have performed a repair in the RVSM area. Before the repair was authorised by Boeing they punched the numbers into their magic computer to calculate if the pressure entering the static port would be disturbed by this patch behind it, and obviously it didn't so the repair was carried out.